Uniform speed means equal distance cover by object in a equal interval of time. for example if object cover 10m in 1second it will cover 20m in 2second 30m in 3second and so on,means the object is covering equal distance 10m in equal time interval 1second so it is uniform speed.that is why the distance-time graph is straight line but not parallel to time axis.Constant speed means same speed in any time interval. for example a train is moving with constant speed of 10m/s at 10:00am at 10:01am the speed is same 10m/s again at 10:02am the speed is same and so on. means in 2minute the speed is same 10m/s or as time passes the speed is not changing or the speed is constant. That is why the speed-time graph is a straight line parallel to time-axis.

Uniform Speed:

Uniform speed refers to a type of motion where an object covers equal distances in equal intervals of time. In other words, the object moves at a constant rate and maintains the same speed throughout its journey.

Constant Speed:

Constant speed, on the other hand, is a more general term that encompasses both uniform speed and non-uniform speed. It implies that an object maintains the same speed but does not necessarily cover equal distances in equal intervals of time.

Differences:

1. Definition:
- Uniform speed: It is a specific type of motion where an object covers equal distances in equal intervals of time.
- Constant speed: It is a more general term that indicates an object maintains the same speed throughout its motion, regardless of the distance covered.

2. Distance-Time Relationship:
- Uniform speed: The distance covered by an object is directly proportional to the time taken. This means that if the time is doubled, the distance covered will also double.
- Constant speed: The distance covered by an object may or may not be directly proportional to the time taken. The object can cover different distances in equal intervals of time.

3. Rate of Change:
- Uniform speed: The rate of change in distance is constant, as the object covers equal distances in equal intervals of time.
- Constant speed: The rate of change in distance may vary, as the object can cover different distances in equal intervals of time.

4. Graphical Representation:
- Uniform speed: On a distance-time graph, the plotted points lie on a straight line, indicating a consistent speed.
- Constant speed: On a distance-time graph, the plotted points may not lie on a straight line, suggesting varying speeds.

5. Examples:
- Uniform speed: A car moving at a constant speed of 60 km/h on a highway.
- Constant speed: A cyclist maintaining a steady speed of 20 km/h but encountering varying terrains and distances.

Conclusion:

In summary, uniform speed is a specific case of constant speed where an object covers equal distances in equal intervals of time. Constant speed, on the other hand, refers to the maintenance of the same speed throughout the motion, regardless of the distance covered. While uniform speed implies a consistent rate of change in distance, constant speed allows for varying distances in equal intervals of time.

The difference between uniform speed and constant speed is that in uniform speed the super is uniformly changing and in constant speed the super is n not changing it remains constant